Abstract: A freestanding article is provided that uses a cured polyaspartic acid urethane resin to form a hardened matrix impregnating and surrounding a cloth having parallel fibers. This resin provides an article with superior mechanical and weathering properties relative to conventional resins such as epoxies and vinyl esters.

Abstract: A thick and thin polyester multifilament yarn having an excellent natural fiber yarn-like hand, a dry touch and spun yarn-like appearance includes a plurality of individual thick and thin polyester multifilaments varying in thickness along the longitudinal direction thereof and exhibits a spectrum having a first peak (Pmax1) of a coefficient of variation in yarn thickness of 4 to 10 cm, a second peak (Pmax2) of the yarn thickness variation coefficient of 50 to 150 cm and a ratio (Pmax1/Pmax2) of 1.5 to 4.0, measured by the normal mode test method using the Uster evenness tester.

Abstract: A spontaneously degradable fiber excellent in bulkiness, softness, stretchability and feeling, which comprises (A) a low heat-shrinkable fiber component comprising a high crystalline aliphatic polyester and (B) a high heat-shrinkable fiber component comprising an aliphatic polyester, e.g., a low crystalline or non-crystalline aliphatic polyester, and a block copolymer or a mixture the main component of which is an aliphatic polyester and which comprises a high-melting component and a low-melting component. Further, fibers excellent in self-crimpability or self-adhesion property and dividable fibers are obtained by suitably combining the fiber components (A) and (B) to form conjugated fibers or composite yarns.

Abstract: The dirt-repellent monofilament with a toughness of at least 36 cN/tex and an extension of under 44% has a soiling index A1>2 after five soiling and cleaning cycles. To manufacture the dirt-repellent monofilaments, a copolymer with a melting point of 255.degree. to 275.degree. C. and consisting of alkenes and perfluoroalkenes is added to a polymer melt of polythylene terephthalate before extrusion. The dirt-repellent monofilament is advantageously used in the manufacture of cleaning filters for the dry section of a paper machine, i.e. paper machine fabric filters. It may also be used to produce fabrics for general use as technical fabrics which have to be cleaned in difficult conditions.

Abstract: A blend of fibers is made of about 51 to 90% by weight of base fibers (a) selected from triangular trilobal fibers having a modification ratio ranging from 2.4 to 3.4; hollow pentagonal fibers; standard trilobal fibers having a modification ratio of at least 2.6; pointed lobe trilobal fibers having a modification ratio of at least 2.6; and mixtures thereof; and about 10 to 49% by weight of accent fibers (b) selected from standard trilobal fibers having a modification ratio ranging from 1.7 to 2.4; pointed lobe trilobal fibers having a modification ratio ranging from 2.0 to 2.9; and mixtures thereof. The fibers (a) and (b) have a denier per filament within the range represented by the area enclosed by sides A, B, C, D and E of FIG. 1. Where fibers (a) and (b) are both pointed lobe trilobal fibers with the same modification ratio and denier per filament, then fibers (a) are delustered and fibers (b) are undelustered.

Abstract: A composite fiber of at least two different polymers, one of which is a water-insoluble polyolefin and the other is a water-soluble polymer, having a plurality of at least 19 segments of the water-insoluble polyolefin, uniformly distributed across the cross-section of the fiber and being surrounded by the water-soluble polymer, a process for the manufacture of such a fiber and a process for the manufacture of microfibers therefrom.

Abstract: There is provided a non-flammable expanded fiber comprising carbonaceous polymeric substantially irreversibly heat set fiber having an LOI value of greater than 40, and the fibrous structures thereof. Also, provided are stabilized expanded polymeric fibers.

Abstract: A composite fiber of at least two different polymers, one of which is water-insoluble and selected from the group consisting of polyester, polyamide and copolymers therefrom and the other is water-dissipatable, having a plurality of at least 19 segments of the water-insoluble polymer, uniformly distributed across the cross-section of the fiber and being surrounded by the water-dissipatable polymer, a process for the manufacture of such a fiber and a process for the manufacture of microfibers therefrom.

Abstract: The process for making a polyamide filament having thermal and mechanical properties close to those of nylon 66 but without spherulites includes concentrating an aqueous solution of adipic acid-hexamethylenediamine salt containing from 1 to 10% by weight of .epsilon.-caprolactam and from 1 to 15% by weight of PA 6.HHT to form a condensed mixture; polycondensing the condensed mixture to form a polycondensed mass; and melt-spinning the polycondensed mass to form the polyamide filament. The process parameters are controlled to produce a polyamide filament consisting essentially of at least 80% by weight nylon 66 monomer, 1 to 10% by weight nylon 6 monomer and 1 to 15% by weight PA 6.HHT.

Abstract: A cross-linked polyethylene insulated cable which is prepared by extrusion coating a polyethylene composition on a conductor, the polyethylene composition comprising polyethylene, more than 10% to less than 30% by weight of an ethylene-vinyl acetate copolymer having a vinyl acetate (hereinafter referred to as VA) content of about 28% to about 33% by weight, the EVA having an average particle diameter of less than 1.7 .mu.m (average of maximum 5 values), and an organic peroxide, and thereafter cross-linking the thus coated polyethylene composition.

Abstract: A preformed yarn useful for forming composite articles is disclosed which includes a core of a multiplicity of fibers, fine powder provided in the interstices between the fibers, and a flexible sleeve formed of a thermoplastic resin and surrounding the core. The fine powder is formed of a material which neither melts nor reacts with the thermoplastic resin at a temperature up to 450.degree. C. and at a temperature up to the melting point of the thermoplastic resin. The incorporation of the fine powder between the fibers is effected by injecting fine powder-containing air from a jet nozzle and blowing the air against a bundle of the fibers.

Abstract: A paper-plastic film, fiberglass-reinforced sealing tape for sealing a carton, a package, or any other article fabricated of recyclable material. The tape includes a paper inner ply whose exposed face is pregummed, whereby the tape is adherable to the article to be sealed, and a synthetic plastic film outer ply laminated by a water-based adhesive to the inner ply. Sandwiched between the inner and outer plies is a longitudinal array of fiberglass strands serving to reinforce the tape. When an article sealed by the tape is to be recycled, then the outer plastic ply, which cannot be recycled, is stripped from the tape.